BUY THE YEAR 9 PHYSICS WORKBOOK

## The Relationship Between Frequency, Wavelength and Velocity

- We saw in the lesson ‘Waves’ that the frequency, wavelength and velocity of a wave are mathematically related. Therefore, by knowing two of these quantities, we can calculate the third.

- To calculate frequency:

- To calculate wavelength:

- To calculate velocity:

- We also saw that this relationship means that frequency and wavelength are inversely proportional.

- Therefore, sound waves with lower frequencies have longer wavelengths and sound waves with higher frequencies have shorter wavelengths.

*(Header image: Thaut Images, Adobe Stock)*